Finding the Fourth Proportional to 22,778.52, 31,434.41 and 12,706.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,778.52 : 31,434.41 = 12,706.71 : x
2. Step 2: Convert to fraction form
   22,778.52/31,434.41 = 12,706.71/x
3. Step 3: Cross multiply
   22,778.52x = 31,434.41 × 12,706.71
4. Step 4: Simplify right side
   22,778.52x = 399,427,868.36
5. Step 5: Solve for x
   x = 399,427,868.36/22,778.52
6. Step 6: Final answer
   x = 17,535.29